Valve.



A. ROSNEB..

VALVE.

APPLICATION man Ausl-3. 1916.

Patented Nov. 13, i917.

UNITED lSTATES Para oren. l

ADOLPH ROSNER, F BRIDGEPORT,

CONNECTICUT, ASSIQQIOR TO THE LOCOMOBILE COM- aPANY 0F AMERICA, 0F NEW YORK, N. Y., A CORPORATION OF 'WEST VIRGINIA.

VALVE..

Specification of Letters Patent Patented Nov. 13, 1917.

To'aZZ 'whom z't may concern.'

Be it known that I, ADOLPH RosNnR, a citizen of the United States, and a resident Aof Bridgeport, in the county of Fairfield and State of Connecticut, have invented an Improvement in Valves, of which the following description, in connection With the accompanying drawings, yis a specification, like characters on theiirawmgs representingr like' parts.

111sl invention relates to valve mechanisms, and is more especially concerned with A, a puppet valve mechanism particularly adapt for use in engines of the internal combustion type, in which the valves are -actuated by tappets which, heretofore, have been more'or less noisy in action ovvin to the striking of the valve tappets orv litgters against the valve stems. y

`My invention will be best understood by reference to -the following description, when taken in connection With, the accompanying drawings showing three speci-o' embodiments thereof, while its scope will be more particularly` pointed out in claims.

Y' In the dra-wings z" Figure 1 is a vertical sectional view ofra 'portion of an internal combustion. engine `equipped. with a valve mechanism embodying my invention; A Fig. 2 is an enlarged, det-ail vertical section of one form of valve embodying my invention;

vFi 3 is a similar section of a second form of va ve embodying my invention; and Fig. 4 is a. similar section of a third form of valve embodying my invention'.4

Referring tothe drawlngs, and more csf pecially noW to Fig. 1, I have' there shown a valve mechanism embodying any invention, the general characteristics of the Lmechanism being similar to those commonly employed in Well known internal combustion engines. In the illustrative mechanism, 5 is the cylinder, 6 the combustion chamber, and 7 an intake or exhaust passage. between the chamber 6 and trolled by a puppet valve 8 Communication passage 7 1s concoperatmg with a valve seat 9. The valve, which-Will bel A,more fully described hereinafter, is provided with a head 10 and a Stem 11, the latter Working in a valve stem guide 12, encircling which is a helically coiled spring 13, one end of which abuts against the cylinder casting,

held in fixed the appended. i

yof adjustment so to and the other against a collar 14, Which is position on the stein by means of a key in a Well known manner. The spring 13 normally holds the valve seated, and restores it to its closed position, after it has been lifted by the actuating mechanism which I will now describe.l i Disposed in axial alinement With,and engaging the lower end of the valve stern 11, is a valve tappet or push rod 16 mounted to slide in a push-rod guide 17, and carrying at its lower end a roller 18 engaging a cam 19 on a cam-shaft 20. Rotation of the latter causes the valve lifter or push rod to be lifted at the proper time in the operation of the cngine, as is Well understood.

Heretofore, it has been customary to provide a clearance between the valve lifter or push rod and the valve stein, suoli clearance being in practice approximately tive-thousandths of an inch. A clearance of this sort has been necessary in order to permit the valves to be seated tightly under the influence of their springs and thereby prevent leakage. This clearance, however, is objectionable because of the noise produced by the hammer action of the valve litters, or push rods, yagainst the valve stems, and it is a matter involving great skill and delicacy adjust the tappets as to of the valves, yet with possible. I amable to insure tight closing as quiet an action as ,eliminate these disadvantages by the use of the novel valve in its will now describe.l

Referring to Fig. 2, I have there shown various forms, which I in detail the' valve illustrated in Fig. 1. In

order to permit the valve stem to continue to move toward the valve lifter or push rod after the seating portion ot' the valve has seated upon its seat 9, the valve, as a whole, comprises a suitable yielding part interposed between the seating portion and the actuating means. `This yielding part may take various crans, and may be variously located, Ibut heibin the head is made elastic so that the valve is resiliently extensible in the direction of its travel. By this means,

vthevalve stem, under the iniiuence of the spring 13, can follow the valve lifter after the seating portion ot the valve has come to rest upon its seat, anch-therefore uninterrupted connection is maintained betweenv the valve and the valve actuating means.

In theform shown in Fig. 2, the resilient inder having a chamber, a valve seat, valve unseating means, valve seating means, and valve means opening inwardly with relation to said chamber and including an elastic portion adapted to yield under the iniuence or' said valve seating means and to maintain uninterrupted connection between Said valve means and said valve unseating means.

G. In an engine, the combination of acylinder having a chamber, a valve seat, a valve unseating means, valve seating means including. a spring, and valve means opening inwardly with relation to said chamber and including` an elastic part adapted to yield under the influence of said valve seating means and to maintain uninterrupted connection between said Valve means and said valve unseating means.

7. In a valve mechanism, the combination of a valve seat, positively acting Valve unseating means having a tappet, valve seating means including a spring acting in opposition to `said tappet, and valve means including an elastic part adapted to yield under the influence or' said valve seating means and to maintain uninterrupted engagement between said valve means and said tappet when the valve is seated.

8. In an engine, the combination of a cylinder having a chamber, a valve seat, a valve movable into and out of Contact with said valve seat and havingcapacity for flexing in the direction of its travel with relation t0 said seat, and means for unseating said valve and for seating and flexing said valve as it seats.

9. In a valve mechanism, the 'combination of a valve seat, a puppet valve coperating with said valve seat, -said valve comprising a stem and a head, the latter in the direction of its travel, a valve' tappet engaging said valve stem, means for actuating said valve tappet to cause the latter to copcrate with said valve stem to'unseat said valve, and a spring actingin opposition to said valve tappet and adapted to flex said valve head and to coperate therewith to being flexible maintain engagement of said valve .stem with said valve tappet.

10. In a valve'structure, the combination with a valve seat, of a puppet valve having a stem and a head, the latter comprising a plurality of laminations one of which is Wrapped about the circumferential edges of another or others;

l1. In a valve structure, the combination with a valve seat, of a puppet valve having a stem and a head, the latter comprising a plurality of laminatiens one of which is rovided with a frustolconical iiange overlapping the edges of another or others.

12. In a valve structure, the combination with a valve seat, of apuppet valve having a stem provided with a shoulderedneclr, and a head comprising a plurality of centrally perforated laminations yencircling and Secured to said neck, the latter being headed over to secure said laminations thereto.

13. In a valve mechanism, the combination of valveactuatinfq means, a valve seat 9, and the valve 8 provided with the fiexiblel head 10.

14. In an internal combustion engine,.the

combination of a cylinder having a comlous tion chamber, a gas passage, a valve seat having an opening to afford communication between said chamberand said passage a puppet valve coperating with said valve seat and opening in an inward direction with relation to said chamber, said valve comprising a stem anda head, the latter vin ing flexible in the direction of its traval, a` valve tappet engaging said valve stem, means for actuating said valve tappet` 'to Cause the latter to coperate with said valve stem to unseat saidvalve, and a spring act-lA ing in opposition to said valve tappet and adapted to seat said valve in an outward dii rection, to iiex said valve head and tocop erate therewith to maintain engagementf'of vsaid valve stem with said valve tappet. V

In testimony whereof, I have-signed my name to this specificatie ADoLPH Rosana. 

